package ch04;
public class Example4_7 {
	public static void main(String args[]){
		Battery nanfu = new Battery(100);	//创建电池对象
		System.out.println("南孚电池的储电量是："+nanfu.electricityAmount);
		Radio radio = new Radio();		//创建收音机对象
		System.out.println("收音机开始使用南孚电池");
		radio.openRadio(nanfu);			//打开收音机
		System.out.println("目前南孚电池的储电量是："+nanfu.electricityAmount);
	}
}
